42231556 has 12 divisors (see below), whose sum is σ = 74179840. Its totient is φ = 21037320.

The previous prime is 42231499. The next prime is 42231559. The reversal of 42231556 is 65513224.

It is a super-2 number, since 2×42231556² = 3567008644362272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42231559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18396 + ... + 20563.

Almost surely, 2^42231556 is an apocalyptic number.

It is an amenable number.

42231556 is a deficient number, since it is larger than the sum of its proper divisors (31948284).

42231556 is a wasteful number, since it uses less digits than its factorization.

42231556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39234 (or 39232 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 42231556 is about 6498.5810758965. The cubic root of 42231556 is about 348.2402995264.

The spelling of 42231556 in words is "forty-two million, two hundred thirty-one thousand, five hundred fifty-six".